Field emission stability and life time of CNT cathode is closely related with the vacuum level, thermal effects during the emission and the current transport capability.
影响碳纳米管阴极场发射稳定性和寿命的主要因素有真空度、场发射过程中的热效应以及场发射体对场发射电流的承载能力等。
A carbon nanotube cathode with high emission current has been fabricated with the screen printing method.
研究了利用丝网印刷法制备碳纳米管阴极，以获取很大的发射电流。
If the vacuum near the cathode is too poor, it will generate spark, gas ionization and ion bombardment on cathode, which can result in a fast attenuation of the emission current.
如果碳纳米管阴极附近的真空度太低，将产生打火、气体电离、离子回轰阴极等问题，将导致阴极发射电流的迅速衰减。
Non uniform temperature distribution causes deviation in emission current, the error of which is less than 5% for the shortest length of diode cathode.
对阴极温度的不均匀导致的发射电流偏差进行了计算分析，并首次得到了发射电流误差小于5%的阴极丝最小长度的计算公式。
Our experiments showed that it can ensure the same stability of thermal emission current by use of a new method of corroding cathode point.
实验表明，采用新方法对阴极尖端进行腐蚀后得到的尖端阴极，同样可保证热发射束流的稳定性要求。
Using beam emission models, the influence to the magnetron characteristics by the cathode current destiny can be obtained.
利用磁路电子注发射方式针对不同的阴极发射电流进行了动态模拟，得到了不同发射电流条件下磁控管的工作特性。
Finally we discuss the differences of turn-on voltage, field emission current density and the stability of field emission display because the differences of the cathode of field emission.
并讨论由此而导致的开启电场的变化、场发射电流密度的变化以及亮度和稳定性的变化。
The emission of repetition rate and intense current electron beam has different character with single pulse emission, and it has different request to the cathode.
与单脉冲工作的二极管相比，重复频率运行的强流电子束二极管具有不同的特点，对阴极也有不同的要求。
The invention can not only satisfy the device request of the emission consistency of the great electric current, and accord with the character of the cathode emission;
本发明的有益效果是，所述的特制纳米陶瓷阴极产品，不但能满足器件大电流发射密度的要求，也完全符合阴极发射的特性；
The invention can not only satisfy the device request of the emission consistency of the great electric current, and accord with the character of the cathode emission;
本发明的有益效果是，所述的特制纳米陶瓷阴极产品，不但能满足器件大电流发射密度的要求，也完全符合阴极发射的特性；
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